Field Methods

Timber Inventory: A Primer for Landowners

John Dooner and Michael Andreu

Petiole Sampling as a Tool for In-Season Nitrogen Management in Cotton

Akash Shah, Hardeep Singh, Lakesh Sharma, Ethan Carter, and Guilherme Morata

This publication aims to guide cotton producers, Extension agents, crop advisors, and consultants on the correct method of petiole sampling for nitrate-nitrogen analysis and interpretation of petiole nitrate-nitrogen test results, and also discusses ways in which monitoring petiole nitrate-nitrogen concentration can be used as a tool for effective in-season N management in cotton. Written by Akash Shah, Hardeep Singh, Lakesh Sharma, Ethan Carter, and Guilherme Morata, and published by the UF/IFAS Department of Agronomy, June 2025.

Camera Trapping for Wildlife

B. W. McDonald, B. M. Mason, C. T. Callaghan, M. A. Lashley, and C. Baruzzi

Camera traps provide a means to easily and unobtrusively view wildlife for a variety of purposes, providing information on the makeup of wildlife communities and sometimes animal behavior. While frequently used, there are currently many different cameras available with a variety of different settings. This publication discusses some of the ways cameras are typically used and provides recommended settings to get the most out of camera traps.

Useful Image-Based Techniques for Manual and Automatic Counting Using ImageJ for Horticultural Research

Lillian Pride and Shinsuke Agehara

A UF/IFAS numbered peer reviewed Fact Sheet. Published by Plant Systems